粤北希望铀矿床深部及其西部外围找矿前景

摘要

Based on the study of geological setting and ore controlling factor for uranium metallization and the exploration results in these years at the west of Xiwang uranium deposit ,we conclude that urani‐um deposit was formed in place where structures , magma and hydrothermal alteration over‐lapped.Uranium mineralization is strongly controlled by NNE ,NEE trending silicified fracture zones , uranium mineralization was strictly controlled by the silicified cataclastic rock near the fracture zones and the contact surface between granites of different phases. There is a highly prospecting potential and developing foreground at the intersection point of Xinqiao fault and the upper wall of NNE ,NEE trending silicification zone.%通过对粤北地区铀成矿地质背景和控矿因素分析，结合近年来在希望铀矿床西部外围开展的找矿勘查成果，笔者认为区内铀矿床定位于构造、岩浆活动和热液蚀变“三位一体”的成矿环境中。其控矿构造主要为北北东、北东东向硅化断裂带，铀矿化严格受硅化断裂带及其两侧蚀变碎裂花岗岩和不同期次花岗岩接触界面控制。新桥断裂与其上盘的北北东、北东东向硅化带形成的构造结，为铀成矿极有利部位，具有较好的成矿潜力和找矿前景。